th_msg
ap->th_code, ap->th_msg);
dp->th_code, dp->th_msg);
length = strlcpy(tp->th_msg, pe->e_msg, packet_size) + 5;
printf("<code=%d, msg=%s>\n", ntohs(tp->th_code), tp->th_msg);
length = strlcpy(tp->th_msg, pe->e_msg, client->packet_size - 5) + 5;
linfo("%s: nak: %s", getip(&client->ss), tp->th_msg);